HELVETICA - set of four panoramas : - Gest. V. C. Bertrand Schrift. V. B. Schwarze, Leipzig "Panorama vom Pilatus (Esel) 2123 m)" Xylograph in black. H. 13 x 67 cm - Imfeld del. Bertrand sc. "Panorama vom Eggisorn (2934 m)" Burin drypoint. H. 9.5 x 62.4 cm - C. Bertrand gest. "Panorama vom Rigfikulm (1800 Meter ü. M. )" Chromolithography. Chromolithograph. H.14 x 49 cm - Imp. Dufrénoy, Paris 3-39 "Panorama du Rigi - Kulm (1800 mètres)" drawn by M. X. Imfeld, after the large Panorama published by Mr. Keller. H. 9.5 x 44.5 cm